Epidural space identification device
AssigneeForce Engineering Co., Ltd.
InventorsTakanori Imai, Hiroshi Hirota
Life of this patent
Estimating the term…
Abstract
An epidural space identification device to identify when a tip of a needle used for epidural anesthesia enters an epidural space that includes a barrel formed in a cylindrical shape and communicatively connected to a needle section, a plunger formed in a cylindrical shape, retractably inserted into the barrel, and having an air hole communicating with an inside of the plunger, and an expansible member having an expansible part provided at a front end part of the plunger and bulging inside of the plunger with a positive pressure generated by pushing the plunger while air discharge from a needle side is regulated.
Claims6
An epidural space identification device to identify when a tip of a needle used for epidural anesthesia enters an epidural space, comprising:
- a barrel formed in a cylindrical shape, and communicatively connected to a needle section,
- a plunger formed in a cylindrical shape, retractably inserted into the barrel, and having an air hole communicating with an inside of the plunger, and
- an expansible member that has an expansible part and is provided at a front end part of the plunger, wherein:
- the expansible part bulges inside of the plunger with a positive pressure generated by pushing the plunger while the tip of the needle is in a blocked state,
- the expansible part is provided at the inside of the front end part of the plunger, and
- the front end part of the plunger is inserted into the barrel while the plunger is inserted into the barrel.
Dependencies are inferred from the claim text.